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The 6.8mm Remington Special Purpose Cartridge (6.8 SPC, 6.8 SPC II or 6.8×43mm) is a rimless bottlenecked intermediate rifle cartridge that was developed by Remington Arms in collaboration with members of the U.S. Army Marksmanship Unit and United States Special Operations Command [6] to possibly replace the 5.56 NATO cartridge in short barreled rifles (SBR) and carbines.
The LWRC PSD is an ultra-short barrel carbine with an 8-inch barrel and Magpul CTR stock. Derived from the M6A2 carbine, it comes chambered in 5.56mm NATO or 6.8mm Remington SPC. [11] It is also available without a stock as the M6A2-P Pistol, but is semi-automatic and also chambered in 5.56mm and 6.8mm Remington SPC. [12]
LWRC PSD Pistol and the IC-PSD are both semi-automatic 5.56 NATO caliber, pistols manufactured by LWRC International. Another PSD, (the SIX8-Pistol ) is a 6.8mm Remington SPC on the same PSD platform.
The rebated rim dimensions exactly match the 6.8mm Remington SPC case, allowing the use of the 6.8mm SPC bolt-face of an AR-15, but the case has a base diameter of .4400" and cannot be reformed from any other existing case. The 400 LGND uses .4005" jacketed rifle bullets. 450 Bushmaster : Uses .284 Winchester cases. Cut the length to 1.700" to ...
6.8mm Remington SPC 7.62×39mm Singapore: 2018–present Brügger & Thomet APC556: Brügger & Thomet: 5.56×45mm NATO Switzerland: yes 2018-present Burton LMR 1917 [11].345 Winchester Self-Loading United States no 1917 Bushmaster M4 Type Carbine: Bushmaster Firearms International.223 Remington 5.56x45mm NATO 6.8mm Remington SPC 7.62×39mm ...
6.8mm Remington SPC (6.8×43mm) cartridge of the limited service LWRC M6 assault rifle.280 British (7×43mm) cartridge of experimental weapons and the briefly in service EM-2 assault rifle; 7.5×38mm Swiss trials Cartridge Stgw Patrone 47; 7.5×38mm chambered for the CEAM Modèle 1950 rifle and experimental French variant of StG 45(M) rifle
The designation of M468 stands for an M4 carbine chambered for the 6.8mm SPC cartridge. It was an attempt to create an optimal Special Operations close-to-medium range carbine for Close Quarter Battle (CQB). A 12-inch barreled micro-carbine and 16-inch barreled carbine version were created. Barrett ceased manufacturing the rifle in 2010. [4]
In addition, the REC7 uses the new 6.8mm Remington SPC (6.8×43mm) cartridge, a round that is of roughly equivalent length to 5.56×45mm NATO ammunition, so it is compatible with a standard-size lower receiver currently in use by the United States military. The REC7 uses a short-stroke gas piston designed by Barrett. It rides above the barrel ...